/* Rainbows v2. The scene fills the screen; one glass panel holds the story and the controls
   (a left rail on wide screens, a bottom sheet on phones). */
:root{
  --bg:#05070F; --ink:#EAF0FF; --ink2:#AAB6D6; --ink3:#7C88B0; --line:rgba(234,240,255,.14);
  --glass:rgba(7,11,24,.68); --focus:#9FB4FF;
  --display:'Bricolage Grotesque','Helvetica Neue',Arial,sans-serif;
  --body:'Source Sans 3','Segoe UI',Roboto,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,Menlo,monospace;
  --spectrum:linear-gradient(90deg,#7b2cff,#3b5bff,#00b0d8,#3ccf5a,#f2d41d,#ff7a1a,#e8202b);
  color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%;margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);line-height:1.45;overflow:hidden;overscroll-behavior:none}
#view{position:fixed;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab;-webkit-user-select:none;user-select:none}
#view:focus-visible{outline-offset:-4px}
#view:active{cursor:grabbing}
:focus-visible{outline:2px solid var(--focus);outline-offset:3px}

/* Labels pinned to things in the scene */
#labels{position:fixed;inset:0;pointer-events:none;overflow:hidden;z-index:1;transition:opacity .6s}
#labels.off{opacity:0}
.tag{position:absolute;left:0;top:0;display:flex;align-items:center;gap:7px;font-size:0.7812rem;font-weight:600;letter-spacing:.01em;color:var(--ink);white-space:nowrap;text-shadow:0 1px 3px rgba(3,5,12,.95),0 0 10px rgba(3,5,12,.9);will-change:transform}
.tag::before{content:"";width:5px;height:5px;margin-left:-2.5px;border-radius:50%;background:var(--ink);box-shadow:0 0 0 3px rgba(234,240,255,.2);flex:none}
.tag.far{font-weight:400;color:var(--ink2);font-style:italic}
.tag.far::before{opacity:.6}
.tag.strong{font-size:0.8438rem}
.tag.num{font-family:var(--mono);font-weight:500;font-size:0.75rem}
.tag.num::before,.tag.big::before,.tag.plain::before{display:none}
.tag.key{padding:2px 8px 2px 6px;border-radius:7px;background:rgba(7,11,24,.72);border:1px solid var(--line)}
.tag.key::before{width:14px;height:3px;margin-left:0;border-radius:2px;background:var(--c,var(--ink));box-shadow:none}
.tag.big{font-family:var(--display);font-size:0.9375rem;letter-spacing:.14em;text-transform:uppercase;color:rgba(234,240,255,.5)}
.tag.note{white-space:normal;width:190px;font-weight:400;font-size:0.75rem;line-height:1.3;color:var(--ink2);align-items:flex-start}
.tag.note::before{margin-top:5px}
@media (max-width:899px){.tag.note{width:150px;font-size:0.7188rem}.tag{font-size:0.7188rem}}

.back{position:fixed;top:calc(12px + env(safe-area-inset-top));left:calc(12px + env(safe-area-inset-left));width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:var(--ink);background:var(--glass);border:1px solid var(--line);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:3}
.back:hover{background:rgba(234,240,255,.16)}
.topright{position:fixed;top:calc(14px + env(safe-area-inset-top));right:calc(14px + env(safe-area-inset-right));display:flex;align-items:center;gap:12px;z-index:3}
.topright .scalebar{order:-1}
.scalebar b{font-family:var(--mono);font-weight:400;font-size:0.75rem;color:var(--ink2);font-variant-numeric:tabular-nums;text-shadow:0 1px 3px rgba(3,5,12,.9)}
.chip{padding:7px 12px;border-radius:999px;border:1px solid var(--line);background:var(--glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:var(--ink);font:inherit;font-size:0.8125rem;cursor:pointer}
.chip:hover{background:rgba(234,240,255,.16)}
#pause{min-width:5.6em;text-align:center}      /* "Pause" and "Play" take the same room, so the button does not move as it is pressed */
.hint{position:fixed;top:calc(22px + env(safe-area-inset-top));left:0;right:0;margin:0;text-align:center;font-size:0.8125rem;color:var(--ink2);pointer-events:none;text-shadow:0 1px 3px rgba(3,5,12,.9);transition:opacity .6s}
.hint.gone{opacity:0}

.panel{position:fixed;left:0;right:0;bottom:0;z-index:2;display:grid;gap:10px;align-content:start;padding:12px max(14px,env(safe-area-inset-right)) calc(12px + env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));background:var(--glass);backdrop-filter:blur(18px) saturate(1.2);-webkit-backdrop-filter:blur(18px) saturate(1.2);border-top:1px solid var(--line);border-radius:20px 20px 0 0;max-height:46%;overflow-y:auto;overscroll-behavior:contain}
.title h1,.title span{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.title h1{font-family:var(--display);font-weight:600;font-size:1.875rem;letter-spacing:-.025em;line-height:1;margin:0}
.title span{font-size:0.875rem;color:var(--ink3)}

.stages{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:2px;position:relative}
.stages::before{content:"";position:absolute;left:8%;right:8%;top:8px;height:2px;border-radius:1px;background:var(--spectrum);opacity:.45}
.stages button{position:relative;display:grid;justify-items:center;gap:4px;padding:2px 0 3px;border:0;background:transparent;color:var(--ink3);font:inherit;font-size:0.75rem;cursor:pointer;border-radius:8px;min-width:0}
.stages button i{width:10px;height:10px;margin-top:4px;border-radius:50%;background:#1a2138;border:2px solid rgba(234,240,255,.45);transition:transform .2s}
.stages button:hover{color:var(--ink)}
.stages button[aria-current="true"]{color:var(--ink);font-weight:600}
.stages button[aria-current="true"] i{background:var(--ink);border-color:var(--ink);transform:scale(1.35);box-shadow:0 0 12px rgba(234,240,255,.7)}

.cap{display:grid;gap:3px;align-content:start}
.cap,.controls,.readout{transition:opacity .4s}
.panel.swap :is(.cap,.controls,.readout){opacity:0}
.eyebrow{font-family:var(--mono);font-size:0.6562rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink3)}
.cap h2{font-family:var(--display);font-weight:600;font-size:1.1875rem;letter-spacing:-.015em;line-height:1.15;margin:0;text-wrap:balance}
.cap p{margin:0;font-size:0.875rem;line-height:1.42;color:var(--ink2);max-width:62ch}

.step{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.btn{padding:10px 12px;border-radius:11px;border:1px solid var(--line);background:rgba(234,240,255,.06);color:var(--ink);font:inherit;font-family:var(--display);font-weight:600;font-size:0.9375rem;cursor:pointer}
.btn:hover:not([aria-disabled="true"]){background:rgba(234,240,255,.16)}
.btn.primary{background:rgba(234,240,255,.16)}
.btn.primary:hover:not([aria-disabled="true"]){background:rgba(234,240,255,.26)}
.btn[aria-disabled="true"]{opacity:.35;cursor:default}

.controls{display:grid;gap:10px}
.ctl{display:grid;gap:4px}
.lab,label{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-size:0.8125rem;color:var(--ink2)}
.lab b{font-family:var(--mono);font-weight:500;font-size:0.7812rem;color:var(--ink);font-variant-numeric:tabular-nums;text-align:right}
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:3px;padding:3px;border-radius:12px;background:rgba(234,240,255,.06);border:1px solid var(--line)}
.seg button{padding:7px 4px;border-radius:9px;border:0;background:transparent;color:var(--ink2);font:inherit;font-size:0.8438rem;font-weight:600;cursor:pointer;min-width:0}
.seg button:hover{color:var(--ink)}
.seg button[aria-pressed="true"]{background:rgba(234,240,255,.18);color:var(--ink);box-shadow:inset 0 0 0 1.5px rgba(234,240,255,.7)}
.seg button:disabled{opacity:.35;cursor:default}

input[type=range]{--v:0%;-webkit-appearance:none;appearance:none;width:100%;height:26px;margin:0;background:transparent;cursor:pointer;touch-action:pan-y}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:linear-gradient(90deg,rgba(234,240,255,.62) var(--v),rgba(234,240,255,.17) var(--v))}
input[type=range]::-moz-range-track{height:4px;border-radius:2px;background:rgba(234,240,255,.17)}
input[type=range]::-moz-range-progress{height:4px;border-radius:2px;background:rgba(234,240,255,.62)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;margin-top:-7px;border-radius:50%;background:var(--ink);border:0;box-shadow:0 0 0 3px rgba(5,7,15,.9),0 2px 8px rgba(0,0,0,.6)}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--ink);border:0;box-shadow:0 0 0 3px rgba(5,7,15,.9)}
input.spec::-webkit-slider-runnable-track{height:6px;border-radius:3px;background:var(--spec,var(--spectrum))}
input.spec::-moz-range-track{height:6px;border-radius:3px;background:var(--spec,var(--spectrum))}
input.spec::-moz-range-progress{background:transparent}
input.spec::-webkit-slider-thumb{margin-top:-6px}
.key{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:4px 14px;font-size:0.7812rem;color:var(--ink2)}
.key li{display:flex;align-items:center;gap:7px}
.key i{display:block;flex:none;position:relative}
.k-sun{width:20px;height:2px;border-radius:1px;background:#ffb13b}
.k-sun::after{content:"";position:absolute;right:0;top:-3px;width:8px;height:8px;border:solid #ffb13b;border-width:2px 2px 0 0;transform:rotate(45deg);box-sizing:border-box}
.k-rain{width:5px;height:14px;border-radius:50%/18% 18% 82% 82%;background:linear-gradient(#a9c8ff00,#a9c8ff 75%)}
.k-eye{width:20px;height:3px;border-radius:2px;background:var(--spectrum)}
@media (forced-colors:active){.k-sun,.k-eye,.k-rain{background:CanvasText}.k-sun::after{border-color:CanvasText}}
.toggle{min-height:24px;justify-content:flex-start;gap:9px;align-items:center;cursor:pointer}
.toggle input{width:18px;height:18px;margin:0;accent-color:#9FB4FF;flex:none}

.readout{font-size:0.8125rem;color:var(--ink2);display:grid;gap:10px;align-content:start}
.readout:empty{display:none}
.readout dl{margin:0;padding-top:10px;border-top:1px solid var(--line);display:grid;grid-template-columns:auto 1fr;gap:3px 12px}
/* each row of numbers is one line whatever it says, so the list keeps its height while a slider is dragged */
.readout dt{color:var(--ink3);min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.readout dd{margin:0;text-align:right;white-space:nowrap;color:var(--ink);font-family:var(--mono);font-size:0.75rem;font-variant-numeric:tabular-nums}
.readout h3{margin:0;font-family:var(--display);font-weight:600;font-size:0.875rem;color:var(--ink)}
.readout p{margin:0;font-size:0.7812rem;line-height:1.4;color:var(--ink3)}
.energy{display:grid;gap:7px;padding-top:10px;border-top:1px solid var(--line)}
.bar{display:grid;grid-template-columns:44px 1fr;gap:8px;align-items:center;font-size:0.75rem;color:var(--ink3)}
.bar div{display:flex;height:16px;border-radius:4px;overflow:hidden;background:rgba(234,240,255,.08)}
.bar div i{display:block;height:100%;transition:width .15s}
.phasor{display:grid;grid-template-columns:96px 1fr;gap:12px;align-items:center;padding-top:10px;border-top:1px solid var(--line)}
.phasor svg{width:96px;height:96px;display:block}
.phasor>div{display:grid;gap:6px}
.phasor h3{font-family:var(--body);font-size:0.7812rem;font-weight:600;color:var(--ink2);line-height:1.3}
.readout .phasor dl{padding-top:0;border-top:0}
.scenekey{list-style:none;margin:0;padding:10px 0 0;border-top:1px solid var(--line);display:grid;gap:5px;font-size:0.7812rem;line-height:1.3;color:var(--ink2)}
.scenekey li{display:grid;grid-template-columns:14px 1fr;gap:8px;align-items:baseline}
.scenekey i{display:block;width:14px;height:3px;border-radius:2px;align-self:center}
.scenekey i.dot{width:9px;height:9px;border-radius:50%;justify-self:center}
.scenekey i.dash{background:repeating-linear-gradient(90deg,var(--ink2) 0 4px,transparent 4px 7px);height:2px}
.scenekey b{color:var(--ink);font-weight:600}
details.energy summary{cursor:pointer;font-family:var(--display);font-weight:600;font-size:0.875rem;color:var(--ink);border-radius:4px}
.readout details.energy dl{padding-top:0;border-top:0}
details.energy>*+*{margin-top:7px}
details.energy dt{display:flex;align-items:center;gap:6px}
details.energy dt i{width:9px;height:9px;border-radius:2px;display:block;flex:none}

.fail{position:fixed;inset:0;display:grid;place-content:center;gap:8px;padding:24px;text-align:center;background:var(--bg);z-index:5}
.fail h2{font-family:var(--display);margin:0}.fail p{margin:0;color:var(--ink2);max-width:40ch}
.fail a{color:var(--focus)}
.phasor p b{color:var(--ink)}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
@media (forced-colors:active){.seg button[aria-pressed="true"]{outline:2px solid Highlight;outline-offset:-2px}.stages button[aria-current="true"] i{background:Highlight}}
@media (pointer:coarse){.back{width:44px;height:44px}.toggle,.seg button,.chip,.btn{min-block-size:44px}input[type=range]{height:44px}.stages button{min-block-size:44px}}

@media (min-width:900px){
  .panel{left:calc(16px + env(safe-area-inset-left));right:auto;top:calc(64px + env(safe-area-inset-top));bottom:max(16px,env(safe-area-inset-bottom));width:372px;max-height:none;padding:18px 18px 16px;border:1px solid var(--line);border-radius:18px;gap:14px}
  .title{display:grid;gap:2px}
  .title h1,.title span{position:static;width:auto;height:auto;margin:0;overflow:visible;clip-path:none;white-space:normal}
  .cap h2{font-size:1.375rem}
  .cap p{font-size:0.9062rem}
  .hint{left:calc(404px + env(safe-area-inset-left));top:auto;bottom:max(18px,env(safe-area-inset-bottom))}
}
@media (max-width:899px){
  .hint{top:calc(58px + env(safe-area-inset-top))}
  .scalebar{display:none}
  .cap p{font-size:0.8438rem}
}
@media (prefers-reduced-motion:reduce){.stages button i,.bar div i{transition:none}}